3D Printing

MakerBot's Thingiverse is the world's largest 3D printing community. In the spirit of maintaining an open platform, all designs are encouraged to be licensed under a Creative Commons license, meaning that anyone can use or alter any design.

Library of 3D printable medical models generated from medical scans. Files are shared by members who have mostly used Democratiz3D online software to generate the model. Some models are free - others charge a download fee.

BodyParts3D is a dictionary-type database for anatomy in which anatomical concepts are represented by 3D structure data that specify corresponding segments of a 3D whole-body model for an adult human male. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2686534/

Few scientific 3D-printable models are available online, and the expertise required to generate and validate such models remains a barrier. The NIH 3D Print Exchange eliminates this gap with an open, comprehensive, and interactive website for searching, browsing, downloading, and sharing biomedical 3D print files, modeling tutorials, and educational material.

The e-NABLE Community is using their own 3D printers to create free 3D printed hands and arms for those in need of an upper limb assistive device.

Yeggi is a search engine that scans other file sharing databases for 3D printable files.

Primarily Scanned Fossils. MorphoSource is a project-based data archive that allows researchers to store and organize, share, and distribute their own 3d data. Furthermore any registered user can immediately search for and download 3d morphological data sets that have been made accessible through the consent of data authors.

Growing collection of 3D models, textures, and images from inside NASA. All of these resources are free to download and use.

TinkerCad is a simple, online 3d modeling application. Many tutorials on youtube.

Blender is a free 3D creation suite. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking, even video editing and game creation.

a platform for 3D CAD (Computer Aided Design) modeling. Students and Educators can get free account